Please make my dust mite allergy stop

I cleaned my room, took cetrizine, and drank many water, but every night, I still mouth breathe and feel fatigued and like crap everyday. I got my tests result back and im highly allergic to dermatophagoides pter, farinae, microceras and Blomia tropicalis. Theres no immunotherapy program in my small town. Is there any way to fix this or am I just doomed?